Method of compressing wood or other elastic material.



I F. ZIEBARTH.

METHOD OF OOMPRESSING WOOD OR OTHER ELASTIC MATERIAL.

APPLICATION FILED 00124, 1912.

1,089,687, Patented Mar. 10, 1914.

- .IV .I. J.

COLUMBIA PLANOURAI'H CO.,WA$!IINOTCIN. u. z.

FRIEDRICH ZIEBARTH, OF FRANKFORT-ON-THE-MAIN, GER-MANY.

METHOD OF COMPRESSING WOOD OR OTHER ELASTIC MATERIAL.

rosacsr.

Specification of Letters Patent.

Application filed October 2 1912.

Patented Mar. 10, 19.14;. Serial No. 727,539.

To all 'tU/LOH'L it may concern it known that 1', l mnnnioir Zinniurrlr, merchant, a subject of the l hnperor o:t' Germany, and a resident of l rankfoit-on-thelliain, in the ilmpire of Germany, have invented certain new and useful Improvements in Methods oi. Compressing \Vood or other Elastic liil aterial, of which the following is a specification.

lvhcn stamping wood, straw and the like materials into boilers there are ditliculties in tightly stamping the charge, since on account of its elastic properties the material has always the tendency to expand again and. to a certain extent to follow the stan'iping tool, on its back-stroke. Thus it is not only rendered dilticult to press tightly the individual layers of material tl'iel'nselves, but the elastic ttorcc of the lower layers which have already been pressed, renders it still more ditlicultto stamp tightly the higher layers, since the stamping tool does not find the resistance in the lower layers which is necessary sutliciently to deform and to compress the material in the upper layers.

The object of the present invention is to avoid this elastic after-effect of the material, so that in this way it is not only possible to stamp it in more eilicicntly, but also more material can be introduced into the boilers. Thus large quantities of material can be uniformly boiled in a short time in comparati vely small. boilers with a small expenditure of work and fuel, so that the economy of working or" the boiler installation as well as its daily yield. is increased.

The invention consists in causing the stamping in oi the material to proceed so rapidly that the material has not su'tlicient time to expand again and. to follow the stamping tool on its return stroke.

According to the invention the n'iatierial can be stamped into the boiler almost as tightly as it it were unelastic or had been compressed by high pressure.

The process can be carried out to special advantage by means of a machine, for cxample by a pneumatic stamping tool. In the drawing is shown for example the arrangcment or a pneumatic stamping installation.

In the interior of the boiler 7, pneumatic stampers l are disposed which are connected. by means of hose 2 with a joint dislrib uting-crossing 3, the latter being provided with shut-otl cocks l0, l2. Compressed air is intrmhiced in the distributing-crossing from any compressed air-source by a principal hose 8, provided with a cock 9 and passing through the neck of the boiler. A countor-balance (5 is secured at. the end of a chain -il: conducted over a tixcd pulley 5 and the other end of which is connected with an inlet tube 13, the latter being united with the distributing-crossing, and thus the weight of the parts 2, 3, ti, 10, 1:3 is balanced in such a manner, that the distributing crossing 3 can be moved easily upwardly, as the height of the lilling in the boiling-vessel increases.

in carrying out my invention, it is preferable to have the workmen move the stampers l in circular rows; thus the drawing suggests an inner row and an outer row. In some cases, it may not be desirable that each workn'ian attending to one ol the pneumatic stampers should be able to shut oil" the supply ot air to such stamper; in this case, the cocks 1t), 12, may be omitted, so that the workmen within the boiler will be unable to shut oll' air from any individual stalnper, and thus all stampers will always be in operation at the same time. In this case, the operation of the stampers 1 would be controlled exclusivcly by the master cock 9, which, being outside the boiler, is not access sible to the men working within the boiler.

The cool air escaping from the pneumatic Stampers is beneficial to the men within the boiler, and the refreshing clt'ect of this air will enable the men to perform more work in a given time. enabling the material to be fed into the boiler regularly and at a rapid rate.

By the use of my invention the output or working capacity of plants for the manufacture of cellulose, paper, and the like may be increased considm'ahly without increasing either the size or the number of the existing boilers. The cost of installing and operating the im 'iroved stamping arrai'igenicnt is negligible as compared with the saving in 'operating expenses and in fuel, and with the better utilization of the boiler plant.

I claim as my invention:

The herein described method of compressing or stamping wood or other elastic material in boilers or other receptacles, which consists in compressing or stamping the ma terial within the receptacle by blows delivered in such quick succession that the material will not have sufiicient time to expand 10 @op'iet of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, WashingtomD. G. 

